Five Advantages Of Products
- Adjust the technical parameters and standard samples of flaw detector according to the testing requirements.
- Adjust the position of probe and probe according to workpiece specifications.
- The flaw detection system detects the workpiece, alarms and marks.
- The welding head can be ground or adjusted by shutdown during the process.
- Data recording, storage and analysis are carried out by the flaw detection host.
On-line eddy current testing system for straight welded pipe EFH1002
Customers produce high frequency welded straight welded pipes, which are made of ferromagnetic materials. On-line eddy current automatic flaw detection system is installed in the field. Testing requirements: to detect transverse and longitudinal defects of pipe and weld. A test scheme is proposed for further testing by both sides.
Detecting Workpiece Information
Detection Objects Name Carbon Steel Straight Welded Pipe (High Frequency Welding)
Material Metal materials such as ferromagnetic materials
Dimension Specification Φ12-108mm
Weld Width 1-5mm (Flat weld or burr)
Length On-line detection
Bending Degree 1.5mm/m (Of the detection station)
Roughness Round surface (chamfered end without convex burr)≦3.2, no oxide scale.
Detection Speed Recommended through speed≦150m/min Adjustable
(Instrument detection speed: 0.52-750m/min)
Detection Part Temperature ≦80°C or normal temperature
Detection Requirement and Accuracy Standard
Executive Standard of Detection
Number of Standard Name of Standard Grade
GB/T 14480-2015 Nondestructive Testing Instrument Eddy Current Testing Equipment /
GB/T 7735-2016 Automatic eddy current testing for seamless and welded steel pipe The Highest Grade
(except submerged arc welding) defects
Technical Parameter of the System
Name of the System: On-line eddy current testing system for straight welded pipe
Detection Method: Dual channel saddle detection (Absolute + Differential)
Control Mode: Automatic + Manual
Instrument and Probe: Eddy current instrument; Dual Channel Digital High Intelligence Eddy Current Flaw Detector and Probe
Detection Platform: Core detection platform independently developed
Brief Introduction of Detection Operation:
Adjust the technical parameters and standard samples of flaw detector according to the testing requirements;
Adjust the position of probe and probe according to workpiece specifications;
The flaw detection system detects the workpiece, alarms and marks;
The welding head can be ground or adjusted by shutdown during the process;
Data recording, storage and analysis are carried out by the flaw detection host;
Automatically form flaw detection report.
Important Parameters of the System
Name Technical Parameter Remarks
End Blind Area ≦50m Depending on the test speed
Stability After 72 hours≦2dB Test sample
Accuracy of Jet Printing ±50mm Test sample
Omissive Judgement Rate 0% Test sample
Misreporting Rate ≦2% Test sample
Test Speed Recommended through speed≦150m/min Test sample
Adjustable (Instrument detection speed: 0.52-750m/min)
Principle of Laid/Saddle Type Eddy Current Testing
This system is used for eddy current detection of carbon steel, stainless steel, copper, aluminum and other non-ferrous and ferrous metal pipes. The whole system consists of five parts: detection device, detection accessories, machinery, electricity and pneumatic. Impedance plane analysis and multi-amplitude phase area alarm technology are used to realize automatic defect detection and output automatic sorting signal, alarm and marking signal.
The alternating current generated by the instrument produces eddy current on the surface of the workpiece through the detection coil, and the magnetic field generated by the eddy current affects the impedance of the detection coil in turn. When there are defects on the surface of the workpiece and the material is not continuous, the original eddy current field will be destroyed and the impedance of the detection coil will be changed. The instrument feeds back to the measuring probe. Impedance change electrical signal is processed to realize automatic defect detection.
General Description of the System
The online system includes: intelligent digital dual-channel flaw detector, customized detection device, probe, alarm system, marking system, customized genuine detection software, automatic control module (integration), customized shielding cabinet and other standard accessories.
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